Changed Arial to Notosans to fix error for pdf

app.py

@@ -13,8 +13,8 @@ def generate_pdf_from_chat(chat_history):
     pdf.add_page()
 
     # Register the Arial font (uploaded to the Space's fonts directory)
-    pdf.add_font("Arial", "", "fonts/arial.ttf", uni=True)
-    pdf.set_font("Arial", size=12)
+    pdf.add_font("NotoSans", "", "NotoSans-Regular.ttf", uni=True)
+    pdf.set_font("NotoSans","", size=12)
 
     for user_msg, bot_msg in chat_history:
         pdf.multi_cell(0, 10, txt=f"User: {user_msg}", align='L')